EP1784544A1

EP1784544A1 - Load-bearing structure for buildings and method for construction of a load-bearing structure

Info

Publication number: EP1784544A1
Application number: EP05785756A
Authority: EP
Inventors: M Jacques Riguelle
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-19
Filing date: 2005-07-18
Publication date: 2007-05-16
Also published as: EP1621692A1; WO2006008293A1

Abstract

The invention relates to a load-bearing structure for a building (22) including at least one supporting wall. The first supporting wall comprises supporting metal stanchions (2), of a height greater than the height of the inhabited level of the building and distributed along the length of the first wall. The number of stanchions depends on said length. The supporting wall also comprises at least one first metal cross-beam (4) for supporting a floor (32, 34, 36) and to essentially support the entire weight. The first cross-beam (4) is fixed transversely to the supporting stanchions (2) of the first wall, between the distal ends of said stanchions (2). The invention further relates to a method for production of a load-bearing structure and a building comprising such a structure.

Description

the

Supporting structure for building and method of constructing a supporting structure

Field of invention

The invention relates to a load-bearing structure for buildings including at least a first bearing wall. This wall comprises supporting metal uprights, a height greater than a height of a building level of the building and distributed over the length of the first wall, their number depending on this length and at least one metal crossbar capable of supporting a floor.

The invention also relates to a method of constructing a load-bearing structure of a building and a building including such a bearing structure.

State of the art

In the prior art are known systems making use of columns and beams of large sections necessary for the recovery of point loads.

For example, the French patent FR 2,529,599 describes a method of building a multi-storey building in which is provided at each corner of the building a vertical post for taking up loads sporadically and extending to a corresponding height at two levels. dwelling. Each post is then anchored by bolting to a concrete base cast in the ground. Between two posts of each of the front and rear facades is fixed a large beam intended to transfer the loads of the floors to the corner posts and to allow the longitudinal bracing. The beam also serves as a load-bearing beam for a floor, given its large dimensions. However, this system requires the use of posts and concrete bases whose dimensions grow with the size of the floors and / or the building.

In addition to the large amount of steel used, another disadvantage of this prior art is that it has a lack of flexibility in terms of creativity, especially for an architect. In fact, an architect who wants to design a building by implementing this known system is obliged to respect the restrictive rules of the system (for example weight and handling, cost related to the weight of the steel, thickness of the profiles intended to contain in the floors or walls ), and to respect predetermined templates, which implies that erected buildings have almost all the same geometry.

European patent 0 070 962, meanwhile, describes a building that can be mounted from prefabricated elements, comprising a supporting frame consisting of profiled elements connected together. To form the framework of the outer walls and the load-bearing walls, vertical columns with C-profile are bolted at their lower and upper ends to horizontal profile bars of U-shaped cross-section. floor, profiled ceiling bars extend from one wall to another of the house and are bolted, at each of their ends, to a vertical carrier pole.

However, such a framework requires the implementation of a large number of profiled ceiling bars, which makes it more expensive to achieve in that it requires more assembly, labor and raw material. Furthermore, such a supporting structure does not guarantee the stability of the building either. Indeed, the frame consists of posts, horizontal profiled bars and ceiling linked by fasteners that can be likened to patella type fasteners. As a result, such a frame does not withstand horizontal forces, for example due to the wind, they can tilt the entire building from the vertical. On the other hand, the horizontal forces on the frame can also cause buckling phenomena at the vertical poles. In the present case, to ensure the stability of such an assembly and contraband the frame, it uses a stable angle configuration for the walls carrying frames joining at right angles.

Finally, the European patent EP 0 698 700 describes a method of building a multi-storey car park comprising rows of vertical posts and base elements or floor modules, which rest between the vertical posts of each row. The basic elements consist of two beams and a cast concrete slab with beams. The beams extend from one wall to another of the building and are fixed at each end to a vertical post.

This prior art has a particular application (parking and vehicle circulation), where the basic principle consists in subdividing the total load of the floor into different load units, each unit of load being supported by four vertical posts. This building construction process is relatively expensive in raw material and labor.

It requires a large number of horizontal beams with a large section. In addition, the hoisting of heavy modules on vertical columns is a delicate operation, difficult and also expensive, and because of the system that makes use of a structure of columns, beams and slabs of large section. Moreover, this prior art does not solve the problem of the bracing of the building thus designed.

Summary of the invention

An object of the invention is to provide a carrier structure system which overcomes the aforementioned problems of the prior art.

To this end, the carrier structure according to the invention is characterized in that the first wall of the support structure comprises a first cross member, able to support substantially all the load of the floor and secured transversely to the support posts of the wall, between the distal ends of these amounts.

Such a structure is inexpensive and easy to achieve in that the floor is supported by a load-bearing wall comprising few constituent elements, namely a set of support posts and a cross member secured transversely to these amounts. Furthermore, the cross member, secured transversely to the wall posts between the distal ends of these amounts, ensures a better stability of the walls of the wall relative to each other. Another advantage of the structure is that it offers a high performance tolerance. It makes it possible to make load-bearing walls having almost perfect straightness, thus facilitating the connection of elements for the floor or for the roof for example.

Another advantage of the support structure according to the invention is that the supporting columns of a wall are distributed over the length of the wall, the number depending on this length.

Thus it is not necessary to implement amounts whose size must grow with that of the floor to support. We are therefore in the presence of a load-bearing wall where the load is distributed over all the amounts. With the system according to the invention, in order to support walls and floors of large dimensions, then use standardized amounts whose number will be chosen according to the load.

Moreover, such a structure offers a great flexibility of design because the skilled person can at will enlarge the building. It will suffice to extend the load-bearing wall by adding in line other bearing posts next to those already installed.

One of the aims of the invention is to provide a structure having good wind stability.

To this end, the carrier structure according to the invention is characterized in that the first cross member is adapted to support a reinforced concrete floor having a metal reinforcement and in that the floor reinforcement elements are fixed to the first cross member.

The reinforcing elements fixed to the cross member act as means of anchoring the slab to the uprights carriers and allow to transmit horizontal forces, via the floors, thus giving overall stability of the building.

According to a preferred embodiment, the carrier structure according to the invention comprises a second bearing wall comprising metal uprights distributed over the wall length, their number depending on this length and a metal cross member secured transversely to the support posts of the second wall. The second cross is suitable, with the first cross, to support the reinforced concrete floor.

According to a particular embodiment of the invention, the amounts of the second wall are arranged on a height greater than a height of a dwelling level of the building. The crossbar is secured between the distal ends of the amounts of the second wall.

Such a load-bearing structure also makes it possible to produce non-standard and non-rectangular floor sizes and shapes, especially since the concrete slab is cast in situ.

According to a preferred embodiment, the floor reinforcement elements are fixed to the second cross member.

The reinforced concrete floor is perfectly attached to the load-bearing walls. The assembly consisting of uprights, crosspieces and concrete floor with its armature is thus a monobloc composite structure that prevents the movement of these different elements relative to each other. Such a structure has a very good overall stability while ensuring bracing. According to a preferred embodiment, the reinforcing elements fixed to a cross member are foldable concrete bars comprising a portion fixed to the cross member.

According to a preferred embodiment, the reinforcing elements are able to be folded and secured to the reinforcement of the concrete floor.

Advantageously, the amounts are arranged at regular intervals, with a pitch less than or equal to 2 meters. More preferably, the space between each amount is substantially equal to 0.6 meters.

Another object of the invention is to provide a load-bearing structure in which ducts and / or ducts can be passed from one level of dwelling to another level of dwelling of the building.

To this end, a preferred version of the support structure is characterized in that at least one cross member is fixed on the face of the uprights of a wall so as to be directed towards the building interior.

With this arrangement of the transom, a technical space is created between the uprights of a wall, which extends continuously from one level of housing to another level of dwelling of the building. In this space, it is then easy to pass pipes or vertical ducts. It is no longer necessary to make cuts in the floor or to provide forms to hide these vertical elements unattractive. Another object of the invention is to provide a load-bearing structure whose construction costs are competitive with respect to the traditional construction.

This goal is achieved by making uprights and crosspieces folded sheet. Moreover, the uprights and the cross members have sections of simple shape, for example C and L respectively.

In a preferred embodiment of the invention, the uprights and crosspieces are obtained by folding sheet metal with a thickness of less than or equal to 4 mm. Preferably, the sheets have a thickness of about 2 mm.

In a particular embodiment of the invention, a lost formwork collaborating with the floor rests on at least one of the first and second crosspieces. In a particular embodiment, the lost formwork collaborating with the floor consists of a ribbed sheet. The floor frame rests on the collaborating lost formwork.

An additional advantage of this structure is that it can also be used for the construction of non-load bearing walls, such as building side façades whose structural function is to play the role of wall distribution of horizontal forces.

This provides a structure that can meet various needs.

In an advantageous embodiment, the first and / or second wall comprises a metal section substantially U-shaped, able to connect the uprights at their upper end. The head section can thus play the role of a carrier element for elements constituting a roof, such as a sand pit or a fault or ridge.

According to a preferred embodiment, the first and / or second wall further comprises a metal support section substantially U-shaped to connect the uprights at their lower end. The metal support section may be secured to foundations, for example reinforced concrete, and thus serve as a support for the amounts to which it is attached. Thanks to these embodiments, there is thus a carrier structure ideally linked from the foundations to the roof, thus providing great stability to the entire building.

In an advantageous embodiment, the purpose of which is to further improve the stability of the supporting structure, insulating or non-insulating panels acting as bracing are attached to the uprights.

Another object of the invention is to propose a building comprising at least one supporting structure according to the invention.

Another object of the invention is to provide a method for constructing a stable carrier structure that is simple to implement, flexible from the point of view of design and economic.

To this end, the method of constructing a load bearing structure for a multi-storey building comprises the step of erecting, on foundations, at least a first bearing wall comprising carrying metal uprights, of a height greater than one height of a dwelling level of the building and distributed over the length of the first wall, their number depending on this length and at least a first metal crosspiece capable of supporting a floor and to carry substantially all the load. The first cross member is secured transversely to the carrier posts of the first wall, between the distal ends of these amounts.

This mode of construction is particularly advantageous because it also saves time and manpower. The number of constituent elements is indeed less compared to an equivalent construction knowing that one uses a cross to support the floor at a wall.

In a preferred embodiment, the first crossmember being able to support a reinforced concrete floor, the construction method according to the invention comprises the following operations: - arranging, on the first crossmember, a metal reinforcement of the floor,

- to fasten, to the reinforcement of the floor, reinforcing elements fixed to the first crossbar,

- pour concrete for the formation of the floor.

This construction method is cost-effective. In particular, the reinforced concrete of the floor is poured in situ, which avoids the costly transportation of prefabricated reinforced concrete slabs. In addition, the frame elements of the floor fixed to the sleepers can be secured to the sleepers in the workshop. In a preferred embodiment, the construction method according to the invention comprises the step consisting in erecting, on foundations, at least a second bearing wall comprising carrying metallic uprights, distributed along the length of the second wall, their dependent number. of this length and comprising at least one second metal cross member secured transversely to the support posts of the second wall, the second cross member being adapted to support, with the first cross member, the reinforced concrete floor.

Advantageously, the operation of arranging on the first through the metal frame of the floor comprises the operation of arranging the metal frame on the second cross.

According to a preferred embodiment, the step of joining these reinforcing elements fixed to a crosspiece comprises a step of folding these reinforcing elements towards the floor frame. In this embodiment, the joining of the reinforced concrete floor to the supporting structure is particularly easy to implement.

In a preferred embodiment, the method comprises a prior step of securing to a metal support section, the metal uprights at their base. The support metal section preferably has a substantially U-shaped section comprising a base and two wings, the wings being oriented upwards. The amounts are attached to the support profiles including welding, bolting or other means. The method according to the invention is particularly easy to implement because the constituent elements of the load-bearing walls can be designed in the workshop before being brought to the site. Thus, it is possible to prefabricate the foundations, to make the U-shaped support profiles, the uprights and sleepers by putting them to an adequate size. Similarly, the joining of the reinforcing elements of the concrete floor to the sleepers can be performed in the workshop. On the site, we can then erect the carrier structure according to the invention, for example by means of a hoisting machine.

Alternatively, it is possible to assemble the components of the load-bearing walls in the workshop and then erect them on the site using a hoist. Thus, the fastening of the sleepers to the uprights as well as the fastening of the uprights to the support or head profiles can be performed in the workshop.

This preferred embodiment of construction is also advantageous from the point of view of costs because it also saves time and manpower.

The invention also relates to a building comprising at least one support structure obtained by a method according to the invention.

BRIEF DESCRIPTION OF THE DRAWINGS These and other aspects of the invention will be clarified in the detailed description of particular embodiments of the invention, reference being made to the figures, in which: the

Fig.l is a perspective representation of an exemplary embodiment of the carrier structure according to the invention.

Fig.2 is a perspective view at different stages of a crossbar secured to the supporting columns of a wall, supporting a concrete floor, and to which are fixed concrete bars.

Fig.3 is a perspective view of a dwelling whose walls and side walls are made by means of the supporting structure according to the invention.

Fig. 4 is a plan view of the dwelling of FIG. 3.

Fig. 5 is a perspective view of a pinion and a side elevation of the dwelling of FIG. 3.

Fig. 6 is a perspective view of an angle of the dwelling of FIG. 3.

Fig.7 is a perspective view of an exemplary embodiment of a load-bearing structure comprising two load-bearing walls and a reinforced concrete floor.

The figures are not drawn to scale.

Detailed description of particular embodiments

Fig. 1 is a perspective view of an exemplary embodiment of the supporting structure comprising a load-bearing wall according to the invention. The load-bearing wall comprises supporting metallic uprights 2, of substantially C-section, and a metal crosspiece 4, of substantially L-shaped cross-section, connected transversely to the support posts 2 of the wall between their distal ends.

The crosspiece 4 supports a floor 32 shown in dotted lines for reasons of legibility of the figure. The shaft of the cross member 4 is secured, by welding or by any other means well known to those skilled in the art, to one face of each upright 2 of the wall, the face being directed towards the interior of the building.

Note also that the metal uprights 2 may also have a closed section.

The assembly formed by the uprights 2, the crossbar 4 and the floor 32 rests on foundations via a metal support section 6 section for example substantially U. The support section 6 is supported on a foundation consisting of a beam in reinforced concrete 8 resting on a base of lean concrete sub-foundation 10.

The metal uprights 2 are inserted into the groove of the corresponding support section 6 and fixed at its base. A head section 12, for example of substantially U-section, is inserted and secured, for example by bolting, to the upper end of the uprights 2 of a wall. The head section 12, via its flat base, acts as a support for a roof element, such as a sand pit or a fault or ridge.

Such a load-bearing wall is extremely stable because the metal uprights 2 are wedged and fixed at their ends between the foundations and the roof. For the construction of a load-bearing wall several meters long, it is advantageous to implement a plurality of uprights 2 in order to distribute the load to be supported and to limit the buckling phenomena of the uprights 2 carriers. The amounts 2 are evenly spaced or not, but preferably regularly a distance of less than or equal to 2 meters. The distance between each amount 2 is advantageously chosen substantially equal to 0.6 meters.

In order to improve the stability of a load-bearing wall, a vertical bracing panel may be attached to the uprights 2. The panel is connected, for example by bolting, welding or by any other known means, on the wings of two uprights. successive.

An advantage of the structure according to the invention is that it is possible to use the technical space provided between the uprights 2 of the wall for passing ducts 14 or vertical ducts 16 extending continuously from a level of dwelling to another level of dwelling.

Thus the construction times can be reduced. Indeed, it is no longer necessary to make cuts in the walls or floors or to provide forms to hide these vertical elements.

Fig. 2 is a perspective view of a particular embodiment of a bearing wall supporting a reinforced concrete floor.

The wall comprises carrying metal uprights 2 interconnected by a metal crosspiece 4 of section L. The crossbar (4) is fixed transversely to the uprights (2) between their distal ends. A ribbed plate 18 is disposed on the cross member 4 and serves as a formwork lost collaborating with a concrete floor 32. The plate 18 can be fixed to the cross by bolting or by any other means.

In order to ensure a good flatness of the concrete floor during its casting, provisional stanchions (not shown) are fixed which support the sheet 18 and take up part of the clean load of the concrete before curing. In addition concrete bars 20, foldable horizontally, are fixed on the crossbar 4. The joining of these bars 20 may advantageously be performed in the workshop. Before pouring the concrete, the concrete bars 20 are folded down and then secured to a metal frame, for example a lattice reinforcement 21 previously placed on the sheet 18; a reinforced concrete floor is thus obtained which is perfectly integral with the load-bearing wall, which makes it possible to obtain an extremely stable load-bearing structure. The concrete bars 20 fixed to the cross members 4 act as means for anchoring the slab to the support posts 2 and allow the horizontal load transfers to which the uprights 2 are subjected.

It should also be noted that the presence of the concrete bars 20 also allows a direct recovery by the uprights 2 solicitations exerted on the floor 32.

According to a preferred embodiment not shown, the reinforcement of the concrete floor comprises a collaborating ribbed sheet which serves as a lost formwork, a lower reinforcement of the concrete slab, and optionally a complementary longitudinal reinforcement disposed in the ribs. The frame of the floor may also comprise reinforcements, preferably U-shaped pins, placed in the hollow ribs of the collaborating sheet at the supports of the sheet, that is to say at the cross. These frames allow to transmit the vertical forces to the sleepers. Finally, the reinforcement of the concrete floor comprises concrete bars folded and welded to the sleepers, especially used to bond the concrete to the sleepers and to transmit the grazing efforts due to the wind.

In this embodiment, the floor frame may also include an upper lattice. This mesh can on the one hand act as a secondary reinforcement to mainly limit the cracking due to shrinkage of the concrete and this especially in the case where the floor would be subjected to vertical forces. On the other hand, the upper trellis may constitute an additional main reinforcement, in the case where the concrete floor is presented as part of a stabilizing gantry.

Fig. 7 is a perspective view of an embodiment of a load-bearing structure comprising two load-bearing walls and a reinforced concrete floor. The structure comprises a first wall 71 and a second bearing wall 72, as described in FIG. 1. Each bearing wall 71, 72 thus consists of a set of carrying metal uprights 2 of substantially C-section, each wall 71, 72 being interconnected by a crosspiece 4 metal. The sleepers 4 support a floor 32 made of reinforced concrete, according to the embodiment described in FIG. 2. The assembly constituted by the concrete floor 32 with its reinforcement 21 and by the two load-bearing walls 71, 72 each comprising bearing posts 2 and a cross member 4 constitutes a monobloc composite structure which prevents the movement of these different elements relative to each other. The concrete bars 20 fixed to the cross members 4 allow the transfer of horizontal forces to which some of the uprights 2 are subjected, via the concrete floor 32, to the other uprights 2. The concrete slab directly poured on the structure absorbs part of the stresses transferred via the frame 21 of the floor 32.

Moreover, in such a structure where the stresses exerted on the uprights 2 are transmitted by the floor 32, the buckling length of the uprights 2 is greatly reduced (that is to say less than the height of a floor), although the amounts 2 go up on at least two levels of the building. This structure has the advantage of providing a greater bearing capacity for the same section of an amount or of using amounts of smaller section for the same load.

Fig. 3 is a perspective view with a view from above of an example of a building 22 made with a support structure according to the invention. Building 22 consists of three modules. The building comprises two gable walls 24, 26 and two shear walls 28, 30, each made by aligning a plurality of carrying metal uprights 2 and resting on a concrete foundation 10.

Building 22 comprises three levels of housing, namely, a ground floor, a first floor and the attic. The concrete floor 32 of the first stage of the first module is secured to the gable wall 24 and to the wall of the partition 28.

The concrete floor 34 of the first stage of the second module is secured to the slitting walls 28 and 30. Finally, the concrete floor 36 of the first stage of the third module is secured to the slotted wall 30 and to the gable wall 26. It should also be noted that the non-peripheral support posts 2 of the walls 24, 26, 28, 30 support, via a crossmember 38, ribs 40 forming the attic of the building 22. An advantage which results from the use of the structure according to the invention is that one can build homes whose layout is unlimited. For example, it is easy to add a new module juxtaposed for example to the first module, by erecting a new bearing structure with a new gable wall and then using the gable wall 24 as a wall of splitting.

Moreover, whether the wind direction is perpendicular to the load-bearing walls (24, 26, 28, 30) or in the plane of these walls, the supporting structure consists of two load-bearing walls (24, 26, 28, 30) connected by a Concrete floor (32, 34, 36) is a stabilizing gantry and also transmits the forces via the floors (32, 34, 36) to the sloping walls perpendicular to the load-bearing walls (24,26,28,30) . It is understood that it is then necessary that these walls of splitting be rigid in their plan. The bracing of these walls can be done using wooden or metal panels, or crosses St. Andrew.

Fig. 4 is a plan view of the dwelling of FIG. 3.

The first module is delimited by the pinion wall 24, the wall of slit 28 and the facades 50, 51. The framework of the pinion wall 24, resting on concrete foundations, is made by aligning a plurality of metal uprights 2, section substantially in C, regularly spaced and interconnected by a cross 4 located at the first floor.

To improve the stability of the frame of the sprocket wall 24 in its middle part, the central amount 42 is constituted by the assembly of two uprights 2 secured back to back at their shaft.

It will be noted that the uprights 2 of each end forming the framework are placed so that their backs close the framework, in order to make the corner connection, as illustrated in FIG. 6.

The second bearing wall of the first module corresponds to the wall of slit 28 placed vis-à-vis the wall pinion 24.

The frame of the wall 28 is made by aligning double uprights 2 regularly spaced and connected by a cross member 4.

The side walls 44, 46 are also erected by aligning uprights 2 regularly spaced and bonded to each other by a cross member 4 at the level of the first floor. These facade walls 44, 46 rest on a concrete base 48 extending between the gable wall 24 and the wall of the partition 28.

All four walls 24, 28, 44, 46 support the reinforced concrete floor 32.

The second module is delimited by the slit walls 28, 30 and the facades 50, 51.

The framework of the load-bearing walls 28, 30 is constituted by double uprights connected by a cross-member 4 to which the concrete floor 34 is fastened. The double amounts consist of the association of two uprights.

2 back to back and secured for example by bolting.

As described above, the double amounts are evenly spaced. Note that it is possible to the

varying the spacing between the amounts so as to provide passages between the first module and the second module and between the second module and the third module.

The frame of the side walls 50, 51 is itself constituted by simple uprights 2 connected by a cross member 4 resting on a U-shaped section fixed on a concrete crossbar, as already described for the first module.

An opening is reserved in the floor 34 to leave a passage for a staircase 55 communicating between the ground floor and the first floor of the building.

The third module is delimited by the wall

30 and the pinion wall 26 and the side walls 52, 53.

The assembly supports a concrete floor 36. The constituent elements of the framework of the third module and correspond to those of the first module.

Fig. 5 is a perspective view of the dwelling of FIG. 3 which shows the gable wall 26 and part of the side façade 53 at different stages of completion.

The gable wall 26 was built on a foundation comprising a concrete beam 8 resting on a sub-foundation base for example of lean concrete 10. Passages for ducts or pipes are provided in the foundation.

The frame of the sprocket wall 26 is formed by regularly spaced carrying posts 2, resting on the foundation by means of a support profile 6 to which said uprights 2 are bolted. Some peripheral amounts 2 extend only on two levels (the ground floor and the first floor) while the other amounts 2 are spread over three levels, the third level constituting the attic. All amounts 2 of the wall pinion 26 are connected to the height of the first floor by a cross member 4 on which are supported joists 54 supporting a wooden floor 36.

The non-peripheral amounts 2 go up to the third level and are connected by a second cross member 38 acting as a support for a farm entry.

The upper ends of the uprights 2 forming the slopes of the farm are surmounted by a head section

12. It acts as a support for receiving various roof elements such as rafters 56, purlins 58 or ridge 60.

The framework of the lateral facade 53 is constituted by a series of uprights 2 spread over two levels of housing. The uprights 2 rest on a support section 6 fixed to a concrete beam whose two ends rest on the foundations of the gable wall 26 and the wall 30.

The uprights 2 are covered by panels 62 which enhance the stability of the building by acting as bracing. These panels can be insulating, thus protecting the home from the effects of the variation of the outside temperature.

For purposes of protection and also for aesthetic reasons, the panels 62 are masked by a wall cladding 64, in the case shown, a brick wall.

The upper end of the uprights 2 forming the framework of the lateral facade 53 is also covered by a substantially U-shaped section head section 12, going from the sprocket wall 26 to the wall of the partition 30. The base of the profile U supports a roof plate 66. Fig. 6 is an enlarged view of the angle formed by the sprocket wall 26 and the side wall 53. The upright 68 located at the end of the frame forming the sprocket wall 26, is secured to the amount 70 disposed at the end of the frame forming the side wall 53. The posts 68, 70 are arranged so that the wing of the upright 70 rests against the back of the upright 68, the two uprights 68, 70 being fixed to each other for example, by bolting.

It will be apparent to those skilled in the art that the present invention is not limited to what has been disclosed and described in particular above. The invention lies in the presentation of all new features and in each combination of these characteristics. The numerals in the claims do not limit the scope of their protection. The use of the verbs "to understand, include or include" and their conjugate forms, does not exclude the presence of elements other than those listed in the claims. The use of the article "a" in front of an element does not exclude the presence of a plurality of such elements.

The present invention has been described in terms of specific embodiments which are an illustration of the invention and which should not be considered as limiting.

Claims

claims

1. Carrier structure for building (22) including at least a first bearing wall, this wall comprising: - supporting metal uprights (2), of a height greater than a height of a building level of the building and distributed over the length of the first wall, their number depending on this length and, at least a first metal crossbar (4) adapted to support a floor (32, 34, 36) and to carry substantially all the load, the first crossbar (4) being secured transversely to the carrying amounts

(2) of the first wall, between the distal ends of these uprights (2).

2. Support structure for building (22) according to claim 1 characterized in that the cross is adapted to support a reinforced concrete floor (32, 34, 36) having a metal frame (18,21) and in that elements (20) of the floor frame are fixed to the first cross member (4).

3. Support structure for building (22) according to claim 2 characterized in that it comprises a second bearing wall having metal uprights distributed over the wall length, their number depending on this length and a cross member (4) secured transversely the support posts (2) of the second wall, the second cross member being adapted to support the reinforced concrete floor (32, 34, 36).

4. Support structure for building (22) according to claim 3 characterized in that elements (20) reinforcement of the floor (32, 34, 36) are fixed to the second crossbar (4).

5. Support structure for building (22) according to claim 3 or 4 characterized in that the amounts of the second wall are arranged on a height greater than one height of a building level of the building and in that the second cross ( 4) is secured between the distal ends of the uprights (2) of the second wall.

6. Supporting structure according to any one of claims 2 to 5 characterized in that the reinforcing elements of the floor (20) attached to a cross member comprise foldable concrete bars having a portion attached to the cross.

7. Supporting structure according to claim 6 characterized in that the reinforcing elements (20) are adapted to be folded and secured to the frame (18, 21) of the concrete floor.

8. Supporting structure according to any one of the preceding claims, characterized in that the uprights (2) of a wall are spaced from each other by a distance less than or equal to 2 meters.

9. Supporting structure according to any one of the preceding claims, characterized in that the crossbar of a wall (4) is fixed on the face (2a) of the uprights (2) of the wall and is directed towards the inside of building (22).

10. Supporting structure according to any one of the preceding claims, characterized in that the uprights (2) and / or the crosspieces (4) are made of folded sheet.

11. A method of constructing a supporting structure for a multi-storey building comprising the step of erecting, on foundations, at least a first bearing wall comprising supporting metal uprights (2), of a height greater than a height of a dwelling level of the building and distributed along the length of the first wall, their number depending on this length and at least a first metal crossbar (4) able to support a floor (32, 34, 36) and to carry essentially the entire load, the first crossbar (4) being secured transversely to the support posts (2) of the first wall, between the distal ends of these uprights (2).

12. The construction method as claimed in claim 11, characterized in that it comprises the following operations:

- the first crossbar being able to support a reinforced concrete floor, have on the first crossbar (4), a metal frame (18, 21) of the floor (32, 34, 36),

-solidariser, to the frame (18,21) of the floor (32, 34, 36), elements (20) of reinforcement fixed to the first crossbar (4),

pouring the concrete for the formation of the floor (32, 34, 36).

13. A method of construction according to claim 12 characterized in that it comprises the step of erecting, on foundations, at least a second bearing wall comprising uprights (2) carrying metal, distributed along the length of the second wall, their number depending on this length and comprising at least a second metal crossbar (4) secured transversely to the support posts (2) of the second wall, the second crossbar being able to support, with the first crossbar, the reinforced concrete floor (32, 34, 36).

14. A method of construction according to claim 13 characterized in that the operation of arranging on the first crossbar (4) the metal armature (18, 21) of the floor (32, 34, 36) comprises the operation of arranging the metal reinforcement (18, 21) on the second cross member and in that it comprises the step of securing, to the reinforcement (18, 21) of the floor (32, 34, 36), elements (20 ) of reinforcement fixed to the second crossbar (4).

15. Building (22), characterized in that it comprises at least one support structure obtained by a method according to any one of claims 11 to 14

16. Building (22), characterized in that it comprises at least one supporting structure according to any one of claims 1 to 13.